POV-Ray : Newsgroups : povray.binaries.images : Impending Disaster : Re: Impending Disaster Server Time
16 May 2024 13:46:45 EDT (-0400)
  Re: Impending Disaster  
From: Kenneth
Date: 16 Feb 2022 19:20:00
Message: <web.620d9410941abfdd4cef624e6e066e29@news.povray.org>
"Chris R" <car### [at] comcastnet> wrote:
> Thomas de Groot <tho### [at] degrootorg> wrote:
> > For what it is worth, I generally use the following radiosity settings,
> > to full satisfaction:
> > [snip]
> >
> > This is quite fast and I experience little or no artifacts. Note the
> > dual (optional) parameters used for count and nearest_count. This can
> > increase the quality of your render without slowing it down much.
>
> Thanks, I tried these out and they seem to have worked pretty well.
>

This does look much better.

About the 2-value count: In my own tests over the last six months, I have set
the 2nd value *really* high -- for example 700, 93271 (!) I have found that it
seems to smooth-out the distribution of the radiosity light patches, by
gathering them from many truly different random directions. (That's my rather
simplistic description of the process, anyway.) With a single-value count, those
directions/locations are still random-- to a degree-- but 'not quite random
enough', in my opinion; I have seen some subtle artifacts that look like
'harmonic bands' of rad patches on objects...like very subtle geometric bands or
stripes. Sorry that I can't be more descriptive, but it's an effect that the
higher 2nd count helps to eliminate.


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